Ultimaker have a build volume of 21x21x20.5 cm, the old specs of 21x21x21 probably was with the thinner acrylic build plate of previous model
Ok, so I almost ordered last night but realized, the prices on the site are VAT-FREE! ouch!
It really makes it a bit too expensive for my taste, but depending on finances , I’ll probably still give in …
(but seriously , ouch, that is like a big month of salary!)
@Florian_Horsch_flouS
thanks again for the info 
And thanks for the rest too , you put me to shame since I am yet to send you anything ! (Please drop me a mail with your postal adress , I’ll have a few thing to send you at the start of january
@Luis_E_Rodriguez
thanks !
That means I’ll harass @Florian_Horsch_flouS for those settings once I got there
@cato_hagen thanks ! half a centimeter loss does not sound too bad.
@Mark_Moissette_ckaos Yep, this VAT-free thing is a bit of a mess, because it becomes obvious quite late in the ordering process. But I mean that’s the price we’re paying for our good lives in the EU 
Hope you can somehow squeeze it in and get started with the machine.
I’ll note my address with the next shipment to you But really don’t feel obliged to send anything. It’s a give and take - and I really feel like getting a lot of functionality from CoffeeScad aka Scad-Latte aka Scad-Lathe.
The Kisslicer settings are in the UM mailing list (there’s really long thread about it (https://groups.google.com/forum/?fromgroups=#!topic/ultimaker/LETIq-3q-jg - I need to catch up on it myself and get work done.). @Jonathan_Dummer just released a new beta of it. I’ll test it during Christmas holidays.